diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@
 
 -- We can also implement 'MimeRender' explicitly for additional formats.
 instance MimeRender PlainText Greet where
-    toByteString Proxy (Greet s) = "<h1>" <> cs s <> "</h1>"
+    mimeRender Proxy (Greet s) = "<h1>" <> cs s <> "</h1>"
 
 -- we provide a sample value for the 'Greet' type
 instance ToSample Greet where
@@ -56,7 +56,7 @@
 type TestApi =
        "hello" :> Capture "name" Text :> QueryParam "capital" Bool :> Get '[JSON,PlainText] Greet
   :<|> "greet" :> RQBody '[JSON] Greet :> Post '[JSON] Greet
-  :<|> "delete" :> Capture "greetid" Text :> Delete
+  :<|> "delete" :> Capture "greetid" Text :> Delete '[] ()
 
 testApi :: Proxy TestApi
 testApi = Proxy
diff --git a/servant-docs.cabal b/servant-docs.cabal
--- a/servant-docs.cabal
+++ b/servant-docs.cabal
@@ -1,5 +1,5 @@
 name:                servant-docs
-version:             0.4.0
+version:             0.4.1
 synopsis:            generate API docs for your servant webservice
 description:
   Library for generating API docs from a servant API definition.
diff --git a/src/Servant/Docs.hs b/src/Servant/Docs.hs
--- a/src/Servant/Docs.hs
+++ b/src/Servant/Docs.hs
@@ -30,6 +30,7 @@
 -- > {-# LANGUAGE OverloadedStrings     #-}
 -- > {-# LANGUAGE TypeOperators         #-}
 -- > {-# OPTIONS_GHC -fno-warn-orphans #-}
+-- > import Control.Lens
 -- > import Data.Aeson
 -- > import Data.Proxy
 -- > import Data.String.Conversions
@@ -51,7 +52,7 @@
 -- >
 -- > -- | We can also implement 'MimeRender' for additional formats like 'PlainText'.
 -- > instance MimeRender PlainText Greet where
--- >     toByteString Proxy (Greet s) = "\"" <> cs s <> "\""
+-- >     mimeRender Proxy (Greet s) = "\"" <> cs s <> "\""
 -- >
 -- > -- We add some useful annotations to our captures,
 -- > -- query parameters and request body to make the docs
@@ -111,7 +112,7 @@
 -- >   :<|> "greet" :> ReqBody '[JSON] Greet :> Post '[JSON] Greet
 -- >
 -- >        -- DELETE /greet/:greetid
--- >   :<|> "greet" :> Capture "greetid" Text :> Delete
+-- >   :<|> "greet" :> Capture "greetid" Text :> Delete '[JSON] ()
 -- >
 -- > testApi :: Proxy TestApi
 -- > testApi = Proxy
@@ -121,7 +122,7 @@
 -- > -- notes.
 -- > extra :: ExtraInfo TestApi
 -- > extra =
--- >     extraInfo (Proxy :: Proxy ("greet" :> Capture "greetid" Text :> Delete)) $
+-- >     extraInfo (Proxy :: Proxy ("greet" :> Capture "greetid" Text :> Delete '[JSON] ())) $
 -- >              defAction & headers <>~ ["unicorns"]
 -- >                        & notes   <>~ [ DocNote "Title" ["This is some text"]
 -- >                                      , DocNote "Second secton" ["And some more"]